Eric Choi (蔡文信)
@aerospacewriter.bsky.social
Aerospace engineer, award-winning writer and editor. Born in Hong Kong (香港). Made in Canada (加拿大). www.aerospacewriter.ca
Gladys West, one of the pioneering Hidden Figures of the early U.S. space program, has died at the age of 95. She did fundamental work on the development of Earth gravitational models that are important for missions like GPS and radar which require the orbits of the satellites to be precisely known.
Obituary: Gladys Mae West (1930-2026) mathematician who pioneered GPS technology
go.nature.com/469BlAW
go.nature.com/469BlAW
Gladys Mae West obituary: mathematician who pioneered GPS technology
Nature - She made key contributions to US cold-war science despite facing huge barriers as a Black woman.
go.nature.com
February 3, 2026 at 2:59 PM
Gladys West, one of the pioneering Hidden Figures of the early U.S. space program, has died at the age of 95. She did fundamental work on the development of Earth gravitational models that are important for missions like GPS and radar which require the orbits of the satellites to be precisely known.
It's a great time to warm up with some cookies and tea and a copy of WINTER OF SCI-FI & FANTASY. Edited by Dustin Bilyk and published by Worldstone Publishing, this new anthology features thirteen tales including my story "Random Access Memory". Available for pre-order now!
tinyurl.com/p5dtuuvn
tinyurl.com/p5dtuuvn
February 2, 2026 at 2:41 PM
It's a great time to warm up with some cookies and tea and a copy of WINTER OF SCI-FI & FANTASY. Edited by Dustin Bilyk and published by Worldstone Publishing, this new anthology features thirteen tales including my story "Random Access Memory". Available for pre-order now!
tinyurl.com/p5dtuuvn
tinyurl.com/p5dtuuvn
My brother Ken Choi is a co-author on a paper in @cjemonline.bsky.social on the demographic and socioeconomic characteristics of emergency medicine residents in Canada. It is the first DEIIA (diversity, equity, inclusion, indigeneity, accessibility) study of Canadian emergency medicine residents.
Demographic and socioeconomic characteristics of Royal College emergency medicine residents across Canada: a cross-sectional study - Canadian Journal of Emergency Medicine
Purpose The cultural mosaic within Canadian emergency department patient populations remains underrepresented in the medical workforce, yet minimal data exist on emergency medicine trainee demographic...
tinyurl.com
February 1, 2026 at 7:22 PM
My brother Ken Choi is a co-author on a paper in @cjemonline.bsky.social on the demographic and socioeconomic characteristics of emergency medicine residents in Canada. It is the first DEIIA (diversity, equity, inclusion, indigeneity, accessibility) study of Canadian emergency medicine residents.
#EccentricOrbits by John Bloom about the rise, fall, and rise of the #Iridium satellite constellation is my absolute favourite space business book. So I was positively giddy when I recently picked up a near pristine hardcover at the local public library's used bookstore for the princely sum of $2.
February 1, 2026 at 5:50 PM
#EccentricOrbits by John Bloom about the rise, fall, and rise of the #Iridium satellite constellation is my absolute favourite space business book. So I was positively giddy when I recently picked up a near pristine hardcover at the local public library's used bookstore for the princely sum of $2.
Please join me to celebrate the life of writer, astronomer, physicist, and science historian Jean-Louis Trudel at Sir John A Pub in Ottawa on February 11 starting at 7:00pm. Let's gather to remember Jean-Louis through conversation and shared memories of his accomplished life.
tinyurl.com/ycyxk6p8
tinyurl.com/ycyxk6p8
January 30, 2026 at 2:58 AM
Please join me to celebrate the life of writer, astronomer, physicist, and science historian Jean-Louis Trudel at Sir John A Pub in Ottawa on February 11 starting at 7:00pm. Let's gather to remember Jean-Louis through conversation and shared memories of his accomplished life.
tinyurl.com/ycyxk6p8
tinyurl.com/ycyxk6p8
I am so proud of my sister Dr. Margaret Choi, not only for the recognition from BC Children's Hospital on this #NationalPediatricianDay but for her years of tireless dedication both within and beyond the walls of the hospital in providing care to the smallest and most vulnerable of patients.
January 29, 2026 at 2:41 AM
I am so proud of my sister Dr. Margaret Choi, not only for the recognition from BC Children's Hospital on this #NationalPediatricianDay but for her years of tireless dedication both within and beyond the walls of the hospital in providing care to the smallest and most vulnerable of patients.
I was honoured to have an opportunity last week to share my career journey with @engineering.utoronto.ca undergraduate students at the 2026 Engineering Science Education Conference (ESEC). Thank you to the students for their questions and inspiring me with their intelligence and ambition and hope.
ESEC 2026 Home - Engineering Science
EngSci students, join us for thought-provoking talks and fireside chats with this year's exciting line-up of ESEC speakers.
tinyurl.com
January 27, 2026 at 3:33 AM
I was honoured to have an opportunity last week to share my career journey with @engineering.utoronto.ca undergraduate students at the 2026 Engineering Science Education Conference (ESEC). Thank you to the students for their questions and inspiring me with their intelligence and ambition and hope.
I am delighted that Christine Tovee and I will be returning to our alma mater @engineering.utoronto.ca to speak at the 2026 Engineering Science Education Conference this week. #ESEC2026
engsci.utoronto.ca/experience/e...
engsci.utoronto.ca/experience/e...
January 20, 2026 at 1:53 PM
I am delighted that Christine Tovee and I will be returning to our alma mater @engineering.utoronto.ca to speak at the 2026 Engineering Science Education Conference this week. #ESEC2026
engsci.utoronto.ca/experience/e...
engsci.utoronto.ca/experience/e...
"We take the world as it is, not as we wish it to be."
- Mark Carney, Prime Minister of Canada
- Mark Carney, Prime Minister of Canada
'We take the world as it is, not as we wish it to be': Carney
YouTube video by CBC News
www.youtube.com
January 16, 2026 at 11:50 PM
"We take the world as it is, not as we wish it to be."
- Mark Carney, Prime Minister of Canada
- Mark Carney, Prime Minister of Canada
This reminds me of the Prime Radiant in FOUNDATION.
January 16, 2026 at 11:35 PM
This reminds me of the Prime Radiant in FOUNDATION.
Congratulations to Dr. Peter Annan on his appointment to the Order of Canada. Peter is an internationally recognised expert in the field of ground penetrating radar. During my early career I had the pleasure of working with Peter on proposals for GPR instruments for lunar and planetary exploration.
Peter Annan appointed to the Order of Canada
Gov. Gen. Mary Simon announced today 80 appointments to the Order of Canada including Peter Annan who was made a Member for his contributions to “near-surface geophysics.” In making the announcement the Governor General described Annan’s career as…
Gov. Gen. Mary Simon announced today 80 appointments to the Order of Canada including Peter Annan who was made a Member for his contributions to “near-surface geophysics.” In making the announcement the Governor General described Annan’s career as…
Peter Annan appointed to the Order of Canada
Gov. Gen. Mary Simon announced today 80 appointments to the Order of Canada including Peter Annan who was made a Member for his contributions to “near-surface geophysics.” In making the announcement the Governor General described Annan’s career as follows: Peter Annan has made transformative contributions to the field of near-surface geophysics for more than five decades. A distinguished engineer, he revolutionized subsurface exploration by introducing airborne electromagnetic and ground-penetrating radar systems.
todayheadline.co
January 6, 2026 at 1:33 PM
Congratulations to Dr. Peter Annan on his appointment to the Order of Canada. Peter is an internationally recognised expert in the field of ground penetrating radar. During my early career I had the pleasure of working with Peter on proposals for GPR instruments for lunar and planetary exploration.
Gloria McMillan will be interviewing tomorrow Phil Nichols and Patricia McManus to discuss the life and career of British science fiction writer #JohnWyndham as part of the HardScience SF Writers Readers Artists Zoom Group speaker series.
Free registration:
tinyurl.com/yc8n5spb
Free registration:
tinyurl.com/yc8n5spb
Welcome! You are invited to join a meeting: Hard -Sci SF MTGs. After registering, you will receive a confirmation email about joining the meeting.
Welcome! You are invited to join a meeting: Hard -Sci SF MTGs. After registering, you will receive a confirmation email about joining the meeting.
tinyurl.com
January 3, 2026 at 12:28 AM
Gloria McMillan will be interviewing tomorrow Phil Nichols and Patricia McManus to discuss the life and career of British science fiction writer #JohnWyndham as part of the HardScience SF Writers Readers Artists Zoom Group speaker series.
Free registration:
tinyurl.com/yc8n5spb
Free registration:
tinyurl.com/yc8n5spb
There is a disturbance in the Force this New Year's Day as I mourn the recent death of my friend Tom Srsa. May he live in the memories of his family and friends, in his children Adrian, Michael and Maya, and in the students whose lives he enriched over a long teaching career. tinyurl.com/2t3h4t2h
January 2, 2026 at 2:05 AM
There is a disturbance in the Force this New Year's Day as I mourn the recent death of my friend Tom Srsa. May he live in the memories of his family and friends, in his children Adrian, Michael and Maya, and in the students whose lives he enriched over a long teaching career. tinyurl.com/2t3h4t2h
Warm and cozy on a cold winter's night.
December 29, 2025 at 3:13 AM
Warm and cozy on a cold winter's night.
Happy Kwanzaa and Happy Boxing Day!
December 26, 2025 at 4:27 PM
Happy Kwanzaa and Happy Boxing Day!
Merry Christmas! Joyeux Noël! 聖誕快樂!
December 25, 2025 at 4:13 PM
Merry Christmas! Joyeux Noël! 聖誕快樂!
It is wonderful how CSA astronaut #JeremyHansen is engaging all Canadians, including the young and the young-at-heart, as the #Artemis2 mission draws near.
www.youtube.com/watch?v=tZ-6...
www.youtube.com/watch?v=tZ-6...
The Space Song with Jeremy Hansen | CBC Kids
YouTube video by CBC Kids
www.youtube.com
December 24, 2025 at 4:31 AM
It is wonderful how CSA astronaut #JeremyHansen is engaging all Canadians, including the young and the young-at-heart, as the #Artemis2 mission draws near.
www.youtube.com/watch?v=tZ-6...
www.youtube.com/watch?v=tZ-6...
Mission Control finishes the year with a new contract from CSA to develop a lunar science instrument called iSPI+ (Intelligent Sensing and Perception in Infrared) and a new collaboration with JPL to participate in FAME (Federated Autonomous MEasurement).
tinyurl.com/rn2yenwz
tinyurl.com/3698d72n
tinyurl.com/rn2yenwz
tinyurl.com/3698d72n
I Spy Innovation - Mission Control
Mission Control wins a contract of up to $2M from the Canadian Space Agency to Develop Autonomous Science Instrument for Lunar Rover Mission Control’s iSPI+ instrument will bring AI-powered, thermal-i...
tinyurl.com
December 23, 2025 at 4:05 PM
Mission Control finishes the year with a new contract from CSA to develop a lunar science instrument called iSPI+ (Intelligent Sensing and Perception in Infrared) and a new collaboration with JPL to participate in FAME (Federated Autonomous MEasurement).
tinyurl.com/rn2yenwz
tinyurl.com/3698d72n
tinyurl.com/rn2yenwz
tinyurl.com/3698d72n
At the discussion on "Crafting Worlds: Pitching, Publishing and Promoting Your SF/Fantasy Ideas" with panelists Oliver Brackenbury, Lloyd Penney and @ourmankoto.bsky.social introduced by Sephora Henderson and moderated by @donaldfsimmons.bsky.social.
December 6, 2025 at 7:20 PM
At the discussion on "Crafting Worlds: Pitching, Publishing and Promoting Your SF/Fantasy Ideas" with panelists Oliver Brackenbury, Lloyd Penney and @ourmankoto.bsky.social introduced by Sephora Henderson and moderated by @donaldfsimmons.bsky.social.
Glenn Grant wrote a terrific story about the Halifax Explosion called "Thermometers Melting" in the alternate history anthology ARROWDREAMS edited by @markshainblum.bsky.social and @dupuisj.bsky.social. The anthology also included my story "The Coming Age of the Jet" about the Avro Canada Jetliner.
December 6, 2025 at 2:53 PM
Glenn Grant wrote a terrific story about the Halifax Explosion called "Thermometers Melting" in the alternate history anthology ARROWDREAMS edited by @markshainblum.bsky.social and @dupuisj.bsky.social. The anthology also included my story "The Coming Age of the Jet" about the Avro Canada Jetliner.